Apparatus for casting curved stereotypes.



0. E. HOPKINS. vAPPARATUS FOB- CASTING GURVED STEREOTYPES.

' APPLIUATION FILED FEB. 19 1907. i

16 SHEETS-SHEET 1.

u ll Attest: I Inventor:

CZ Z ZM 4 a Patented Jan. 3, 1911.

' G. E. HOPKINS. APPARATUS FOR CASTING UURVED STBREOTYPES.

' APPLICATION FILED FBB.19,1907.

9, Patented Ja.11.3, 1911.

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Arrest: Inventor; 4w 2M m 5 Mn wmf ifggf r U. E. HOPKINS. APPARATUS FORCASTING GURVED STEREO'IYPES.

APPLICATION FILED FEB. 19, 1907.

Patented Jan. ,3, 19-11.

16 BHEETB-SHEET 3.

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Artj s.

Patented Jan. 3', 1911. 1a 'snnna enmw: 4.

QM B P Y T 0 E R E T S mn w P 0G m m BA ..G R 0 P S U T A R A P P AAPPLICATION FILED FBB.19, 1907.

' Inventor:

Al test'r 0. E. HOPKINS. APPARATUS FOR CASTING GURVED STEREOTYPES.

APPLIOATION FILED PIP-13.19, 1907. 419 vPatented Ja.11.3, 1911.

1-6 sums-511mm 5.

$9 ca mm m A: wwiw Inventor:

U. E. HOPKINS.

APPARATUS FOR CASTING GURVED STERBOTYPES.

APPLICATION I'ILED P131319, 1967.

Patented Jan. 3, 1911'.

16 BEEETS-SHEET B.

' Inventor Attest;

O. E. HOPKINS.

APPARATUS FOR CASTING GURVEI) STEREOTYPES.

APPLIOATION 111,21) FEB. 1:1, 1901.

980,41 9. Patented Jan.3,1911.

1 lmlllllllllll'llllllli .llllllllllllllllll Inventor:

G. E. HOPKINS APPARATUS FOR CASTING GURVED STEBBOTYPES.

APPLICATION FILED FEB. 19, 1907;

Patented Jam 3, 1911.

16 SHEETFBHEET 8- k G. B. HOPKINS. I APPARATUS FOR CASTING 01mm)STEREOTYPIS. V APPLICATION FILED in. 19, 1907. 980,419 I Patented Jan.3, 1911.

18 BHEETSSHEET 9.

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Inventor:

O. E. HOPKINS. APPARATUS FOR CASTING CURVED STEREOTYPES.

APPLICATION FILED FEB. l9, 1907.

Patented Jan. 3, 1911.

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IIII 0. E. HOPKINS. H APPARATUS FOR CASTING GURVID STEREOTYPES.

APPLICATION FILED T13R19, 1907. I

Patented Jan. 3, 1911.

16 SHEETS-11311! 11.

1 (1. E. HOPKINS. APPARATUS FOR .UASTING GURVED STEBEOTYPI'S.

- APPLICATION FILED FEB. 19, 1907. 980,419.

Patented Jan 3,1911.

16 SHEETS-SHEET 12.

uin-"- ram 1 H 3 .1. 4. 4 m K M 8 b S w 1 as, 9% H Q @g G. E. HOPKINS.

- APPARATUS FOR CASTING GURVERSTEREOTYPES.

-A'PPLIOATIOH FILED r1111. 19, 1907.

980 ,4119, {Patented Jan. 3, 1911.

16 SKBETB-BHEET 13 lnvntor:

G. E. HOPKINS.-

APPARATUS FOR CASTING GDEVIBD STEREOTYPES.

APPLIOLTION TILED PEB.19, 1907.

' Patented Jan. 3,1911.

16 sums-sum 14 nn h r UL G. E. HOPKINS, APPARATUS FOR CASTING GURVEDSTEREOTYPES APYLIGATION FILED IEB.19, 1907.

Pateixted Jan; 3, '1911.

Invntor:

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0; B. HOPKINS. APPARATUS FOR CASTING GURVED STEREOTYPIIS.

LIPLIOATIOH 21mm IEB.19, 1am. 1

1 Patented Jan. 3, 1911.

I 16 Bums-sum 1a.

' Attest" APPARATUS FOR CASTING CURVED STEREOTYPES.

CHARLES EDWARD HOPKINS, OF \VOR-CEfSTER, MASSACHUSETTS.

Specification of Letters Patent.-

Patented Jan. '3, 1911.

Application filed February 19, 1907. Serial No. 358,194.

To all whom it may concern:

Be it known that I, Cnanuss Enn'ano Hol'nms, a citizen of the UnitedStates, and

resident of lVorcester, in the county of Worcester and State ofMassachusetts, but at present residing at 38 Camberwell new road, in thecounty of Surrey, England, engineer, have invented new and useful linpovcments in Apparatus for Casting C rvcd Stereotypes, of which thefollowing isla specification.

The pre nt invention consists of improvem' nts in apparatus for castingcurved ste eot3 Jes, these improvements being particula 1y, butnotexclusively, applicable to the m chine described in the specification ofB itish Letters Patent 12850 of 1903.

ferring to the accompanying drawings w ich are to be taken as part ofthis specific tion and read therewith, Figure 1 is a s tional sideelevation of the apparatus on th line 1-1 of Fig. 2. Fig. 2, a, plancorre 'pondin therewith with part of the metal pt' cover broken away.Fig. 3, a plan of the in mice omitting the metal pot; Fig 4., a .iiionalplan on the line 1-4 of Fig. 5; "r. 5, asectional elevation on the line5-5 i o .fyFig. 3; Fig. 6,41 section on the line 6-6 n .'Fig. 3: Fig. 7,a detail section on the line 39 7 ,'i' of F ig. 5; Fig. 8, a detailfront eleva-z aim of the metal potlooking at it in the direction ofthe'arrow in Fig. 5; Fig. 9, a sectional side'elevation including thefront oithe metal pot, the cope and the drag, the Latter being in thecasting position; Fig. 10, vertical section on the line 10-10 of Fig. l:1; Fig. 11, a horizontal section including 3 art of the metal pot, thecope and the drag; Fig. 12, a front elevation of the cope; Fig. -23, asectional plan on the line 13-43 of Fig. 512.; Fig. 14. a verticalsection on the line 514-14 of Fig. 12, looking in the direction of thearrow; Figs. .15 and 16, perspective Eniiews of the .two side bars; Fig.17, an en- .4 'il'nrged longitudinal section of a matrix l qlamp in theunlocked position. Fig. 18, an genlarged longitudinal section of amatrix liclamp in the locked position. Fig. 19, a gfurt'ner enlargedsection on the line 19-19 5 {(if'Fig. 18; Fig. 20, a further enlargedsec- '}tion on the line 20-20 of Fig. 18; Fig. 21, ian enlarged detailsectional sideelevation of is self-closing feed door in the closedposition Ztuken onthe line 2121 of Fig. 22. F ig. 551225 11 planof Fig.21. Fig. 28, an enlarged detail side elevation of a sclfaclosing feedvenie'nt number as indicated by the keep the ['heat in.

door in the open position. F ig. 24, a detail sectional side elevationof the pivots of the said door and platform. Fig. 25, a sectional planon the line'2-5-25 of Fig. 24:; Fig. 26, an elevation of Fig.'27. F ig.27, a sectional plan in the line 2727 of Fig. 26. Fig. 28, a detailfront elevation illustrating the coiiperation of the cylinder G and itstwo bars in respect of supporting the stereotype; Fig. 29, a transversesectional elevatlon illustrating a modified form of matrix clamp; andFig. 30, a detail section of part of a stereotype, the reference numberson it referring. to the organs of the apparatus which form therespective contours.

Regulation of draft over the metal pot sides-Figs. 1, 2, 3, 5 and haflic1 (preferably of fire brick) extending laterally from the metal pot andfurnace frame 2 inwardly up to the metal pot 3, there cine, the usualdistance between the two. t is situated rather nearer. to the metal potbottom than to the top thereof and is continued around the metal pot,excepting ust over the valve chamber 4, where there is a port 5 for thedraft. There is a similar port 6 in the ballie 1 next to the smoke flue,e. r 7, the latter being above the baflle 1, and this second portfi isprovided with a damper 8. This damper S is kept open until the metal inthe pot 3- is melted, "and then closed; thereby forcing the most intense heat of the furnace e. g. 9, upon the valve chamber 4, which withthe valve and the valve nozzle, 'is therefore kept as hot as isdesirable during the time the casting is proceeding. It is desirable forthe sake of a maximum output and compactness to arrange as manycombinations of cope, drag and their complementary parts about a singlefurnace as there is room for, all the combinatlonsto be capable of beingIn operation at the same time. Three is a conof three frames 68 in Fig.2, and three ports rcsen ce 6.There is a i 5 in Fig. 3. As allthecombina-tions (if-cope, drag and their complement-a1 parts, are replicas of each other, only one has been illustrated.

Metal pot cover, feeding door, and metal stirrer-Figs. 1, 2, 3 and 21 to27.--Th e metal not 3 is fitted with a permanent 'cover 10 to of araised middle portion 12 of the cover To enable the cover to r poisethen resting over the top of the raised middle portion above mentioned.A platform 16 is pivoted by its rear edge to the door sill by pivots 17,and has its front edge connected by linlcs 18, 18 to posts 19, 19,projecting upward from the top ofthe door 11. Solong as the latter isheld closed by the o0unterpoisel5, the platform 16 slopes downwardtoward the doorway 13. \Vhen a feed of metal is put on the platform 16,its weight forces the latter down upon the top of the metal ot frame 2and opens the door 11, the latf rm 16 being then horizontal. The fee isthen pushed through the doorway 13, whereu on the counterpoise 15 shuts.thedoor 11, and returns the platform 16 to its normal or slopedposition.-

The stirrerconsists, substantially as heretofore, of a rotating body 20formed like a propeller, carried near the bottom of the metal pot 3, onthe bottom end of a vertical shaft 21 turning in suitably supportedbearings 22, 22, and driven at the necessary speed by suitable means,such as a driving pulley 23 on a shaft 24 and a worm and Worm wheel 25.The present invention combines with the above stirrer, but-beneath thelowest level of theinolten metal in the metal pot 3, afixed'grating 26upon which the metal feed drops and which also prevents the molten metalbeing whirled around the pot by thestirrer, the metal circulatingvertically through the grating instead.

The two side barsD, D of the said Pati ent 12850/03, were. carried bythe plate or stereotype carry ig frame D and each side bar overhung thebottom D (when it was down upon the latter) far enough to fit up to therespective side edge-of the on e in the casting sition, for the purpose0 closing the mold down the respective vertical edge, which it did witha face so beveled plate was a that the convex face of the stereotype wasnot so wide arcually as the concave side. This bevelin down each side ofthe stereoc lrawback for this reason. The

orm cylinder of a. rotary printing machine has a stop bar parallel withits axis on each side of it, and a beveled side of astereoplate fitted uto each stop bar when it was inounted on t 1e printing machine cylinder.Consequently, thespace between the respective stop bar and end of thestereotype could not be. used to carry type, whereby the practicableheightof the printing columns was shortened accordingly. According tothe present invention--see Figs. 11 and 13lto 16-what may be' called aportion 27, 2820f each side bar, rectan ular in cross section (exceptfor the small angle 31 described farther on), is separated from therest, and is made fast to or integral with the cope 29, being recessedthereinto and projecting therefrom across the mold 30 for nearly thefull width of the latter, Where the matrix clamp fits up to it metaltight, as shown in Fig. 11. The said portions are cut away next to .themold, but so as to present a straight face 101 across it (except for theridge 32 on the portion 27 described farther on); said face and theconvex side of the mold being connected b a surface or con cave face3lwhich is adapted to produce a rounded edge in the cast plate insteadof a sharp edge as before, which sharp edge had to be removed to preventit cutting the hands of those who had to handle the stereoty e.

The two side bar portions 27, 28 a ovementioned, being fast to the cope29. are not brought by the plate holding frame 2 down upon the cylinderGt-Fig. 28-which supports the stereotype during the process of cuttingoff the riser, and valve slug and beveling the ends of the stereotype.

Stereoty e holding cylinderFi ll, 15 and 28.l he room made by the asence of the side bar portion 28 (the ri ht hand one in the castingposition) from t e stereoty e .carryin frame D is now occupied by a Hattopped ar 102 fast on the cylinder G aral- -lel with its axis, and uponwhich bar t e respective'side edge of the stereotype 100 rests. Theopposite sidebar portion 27 has "a rib drag is In the casting position,as shown in Fig. 11, to form a groove down the res ectiveside edge ofthe stereotype. The cy inder G has an angle bar 103 upon it op osite thebar 102, the said bar 102 and anglia bar 103 meeting the res ctive sideedges of the stereoplate 100 as tlit a cylinder G and plate carryingframe D approach each other, the projectin edge of the an le bar 103engagmg l-'1 t 1e groove in t 1e stereotype 100 whereby the alter isheld up to the said cylinder Gr,- the cylinder pins 17 and sockets p ofthe Patent 12850 of 1903 being dispensed within the present cope 29. Ithas often happencd-thata stereotype made under the previous patent hasstuck so close to the end sections. 1: of the stereotype carrying frameD and the corresponding part of the matrix (5!), that the act'ofstrippin bent thestereotype backwar Such bending is'now prevented by theengagement be-' tween the angle barand cow just described. The operatewith a ridge'adapted *to act as a guide for the stereotype as ittisbeing traveled through the cylinder of .-the stereotype finishingmachine, and which latter forms no part. of the present invention. Thebar and the side bar 28 have a ridge 32 to correspondnyith the; si le,bar 27.

32 pro ecting into the mold 30 when the has actually 102 may be replacedby an angle bar. a .103

' Top and [ml/ um (If /u- 'lir/Z(/-]lgl l 1; to l-lrlhe convex face ofthe cube 2?.) has two transverse ridges; 40, 4-1 in do the work of theend bars 1)", l) of the previ us patent, as closers of the top andbottom of the mold, respectively. so that there are now no end rings onthe stereotype. carrying frame 1)" in close engagement with the two endsof the stereotype. The latter will, tln-ret'ore. part from the saidframe more readily than before. The top ridge 40 may e detachable fromthe cope 2t), so'that in the. event of either the metal pot or the metaldelivei' v getting out of order, the mold 30 may be used open at thetop, when it can be filled with a hand ladle. The cope 29 has also anintermediate ridge 42 which with a bottom ridge 4!, forms a metaldistributing chamber 43. This intermediate ridge 42 has its radial widthreduced on each side of a central portion 1-4 of it that-stands over thenozzle 4-5 that delivers the metal, such portion acting as a bafile torevent the metal splashing upward and t ereby producing defects in theprinting face of the stereotype, the metal-being compelled to flowupward steadily through t to ports formed on each side of the battle 44by the reduced radial width. The battle 42 may be dispensed with, inwhich case there will be only one areual portpthe radial width of theridge 42 being such that; the clear way through the said port .is notmore than, and

preferably less than, that of the nozzle 45, so as to make the metaldistribute evenly through the chamber 4?. The three ridges 4-0, 41,, 42do not project into the mold 30 far enough for the bottom D to be intouch with them when it is intlie casting position, but it has curvedflat semicircles 46, 47, that bear against them, so that the ridgespress the said semicircles to the bottom D.

Web on the emmarejacc of the stereot 1 u'-Figs, 1O 12 and 14. The topend of the cope has a transverse groove 48 in it (or projection on it)which forms a correspending web on (or cavity in) the concave face ofthe stereotype 100 or its riser, in order that the stereotype finishingmachine above mentioned may take hold of this web (or cavity) to pullthe stereotype lengthwise through it.

Valve and valve mcchdnimn-Figs. 1, 2 and 1t! -'lhe presence of the metaldistribut-ing chamber 4-3 permits of the use of a single valvedelivering under the battle 44 above mentioned, in the place of the twovalves and neither haflle nor distributingchamber of the previouspatent. The single valve consists of a straight plunger 49 circular incross section and having a tapered nose 50 adapted to fit. in acorrespond g annular seating in the cope 29. Theplxhger 49 is situatedhoriiontally or nearly i;o,' and works in a suitable guide 51 in thevalve,

chamber 4 which is formeden the front of the metal pot t. The necessaryreciprocaling motion is given to each plunger 49 by a hand lever 52 faston a shaft 53 turning in brackets :34- on the metal potfraine 2, a pairof miter gears 5:: connecting the respective handle to a vertical rod5t] and a pinion 57 on the bottom end of the said rod en an ing with arow of teeth 58 on the side oft-he plunger 49. This valve mechanism ismuch simpler than the toggle mechanism of the previous patent, whichnecessitated hand holes in the sides of the. valve chamber to enable thecrector to get at the connections of that mechanism. The plunger 49 andvalve chamber 4 too, are more easily accessible, because as the cope 29is detachable from the metal pot frame 2, the said plunger can be takenout after the cope-29 has been detached, by taking hold of the )lungernose 50 previously protruded to a 0rd at hand hold, the plunger beingthroughout of less diameter than the nozzle 45. he front of the valvechamber 4 stops short of the concave face of the cope 29 and theintervening s are is occupied by a nozzle 59 surrounding t 1e plungerand extending only a short distance into the cope 29, preferably nearlyup to the valve seating 51 which is not formed in the faee of the cope,so that the cooling chamber 60 comes close up to the said seating. Theadvantage of this arrangement is that; the cooling of the stereotypeclose to the valve seating-:51 proceeds as rapidly as elsewhere' Thenozzle 59 may-be either in- 100 corporate with the nozzle 45 or beattached to it. The valve seating 51 is surrounded by the coolingchamber 60 and'the hot gases from the furnace 9 do not. get near enoughto the valve seating 51 to interfere with the well-known action ofthecooling water in the way of congealing an annulus of metal between theplunger nose 50 and its seating 51 whenever the latter may stand open alittle Providing for the cape 29 moving with the cmpansion andcontraction of the metal pub-Figs. 1, 2. 7, 9,10, 12, 13 and 14, '1; ereare lateral projectionsor lugs 04, G5 Fig. 7-011 the metal pot 3 closeto the valve. 115 chambeqa-nd. to these -is somewhat loosely attached-aaertical-frame GG-towhich the cope itself is fixed by lugs 61, 62, 3 andbolts, instead of directlyand only to the furnace as in the previouspatent. The cope 0 7 must movewithuthe Inet'alpot 3, add cope 13 29, sothat the fit of the bottom D up to the cope 29 will not be interferedwith.

Maintaining the bottom I) at the best working temperature throughout itsZe'ng 5 Figs. 1 and 9.If the bottom is too cold when a stereotype iscast, it sweats. The moisture then creeps through the matrix (39 andspoils the printing face of the stereotype. As the presence of thenozzles 45 and 59 prevent the cope. 29 having a cooling chamber exactlyopposite them, time. has been lost in waiting for the valve slug (thebottom part or tail) of the stereotype, to cool. The present inventiontherefore provides the bottom D with one separate water circulation 70positioned to stand opposite to and to theright and left of the saidnozzleswhen the drag is in the casting position and having a separatesupply and waste, flexible connections, and regulating taps.

71 is a separate water circulation for cooling the remaining portions ofthe stereotype. By these means, the sweating of the part of the bottom Din front of the printing face of the stereotype, is prevented, be-

cause the part will now be kept at a-proper temperature; and that partof it that is next to the nozzles can be kept as cool as possible.

Turning the drag D up into the casting position and withdrawing ittherefrom- Figs. 1, 2, 9 and 10.In the previous patent, this wase'fiected in part by a slotted guide f and a stationary rod f". As thesaid guide was fixed close to thetail end of the drug I),

the first part of its motion from the cope was arcual and this directionof the motion had the effect of sometimes making the stereotype bind inthe transverse grooves in the 40 said cope, and would also make it bindagainst the transverse ridge 4?. which the present invention placesabove the metal distributing chamber 43. According to the presentinvention, the slotted guide 72 is longer than before, preferably moreinclined to the rear from its junction with the bottom D downward(although it may be perpendicular to the bottom) and termina es in aportion 73 that is at right angles with the said bottom. Further, it isfixed to this bottom D.midway, or nearly so, .of its -length, and-whenthe bottom is horlzontaL.

it is the then top of the slot and not the bottom of it, that is near tothe stationary rod 5 74. The consequence is that the operation of thetoggle 75 turns the bottom D up-- ward on the rod 74 as on a pivot, theinclined portion of the guide 72 sliding on the said 0d. At the. momentwhen the angle made y the junction of the said inclined portion with theportion 73, reaches the rod 7-1. the bottom D and the portion 73 are.parallel -with the cope 29 and the rollers 106 'on the sides of the saidbottom have traveled to the rear ends of the horizontal portions of theways 75. It must be remembered that the cope 29 is not vertical butinclined to the front and that the ridge 42 and the groove 76 on and inits face, as well as the inclined portions of the ways 75, are still atright angles with the front of the cope, as in the previous patent. Thecontinued operation of the toggle 75 moves the bottom D up the inclinedportions of the ways 75, and the portion 73 of the guide '72 over therod 74.. The plunger 49 is now opened whereupon metal flows into themold 30, filling up the nozzle 45, the intermediate chamber 43 and thegrooves 76, and surrounding the ridge 42, after which the plunger 49 isclosed. The stereotype 100 then sets hard. It is probably now connectedto the metal in the. valve chambers 4 by an annulus of'metal which mayhave been left between the plunger nose 50 and its seating 51. lVhctherthis connection is present or not, the rid es that have been formed inthe grooves (6, used to contract upon the cope and wedge themselvestightly'thercin, so that when the operator reversed the toggle 75" towithdraw the bottom D and the stereotype 100 from the cope O, the top ofthe bottom would move away from the cope before the lower portioh of it;had begun to move, the bottom as a whole pivoting on the rod 9 of theprevious patent. more readily. because the rod 1 and the co operatingguide i were beneath the line in which the toggle was pulling. Thispivoting of the bottom D had the effect of wedging the ridges on the.inner face of the stereotype. in their grooves 76 in a vertical sense,which wedging was a further obstacle to the bottom and. stereotypebeingwi hdrawn from the cope. But as the guide portion 73 and rbd 74 arenearly inthe line. of the pull of the toggle, the above describedrocking on the part of the bottom D and wedging of the ribs inthe-grooves 76 are now prevented by the presence of the rod 74 in theguide portion 73, this presence serving to make the bottom'D'=maintainits parallelism with the cope C until after the stereotvpe has clearedit. Consequently, both the stereotype 100' and the bottom D arewithdrawn from the cope easily and movetogether smoothly down theinclined portion of the ways 75..

1l[ dtrz'aclamps Figs. 11, 17 and 29.-Thc casting liar portion 76 of animproved matrix clamp does not project so far toward the center line ofthe drag as in the previous patent. being now only long enough in thisdirection to fit. up to the adjacent face of the respective side barportion 27, 2S-Fig. 1l--and has only a short bevel S0 11, 19 andQt'l-th'e result being that when the frame D and matrix 69 have to beseparated from the stereotype 100 when the latter is on the cylinderGFig. 28-prepara- It would do this all the

